Attachment of engine cylinders to crank cases



S. M. VIALE.- ATTACHMENT 0F ENGHVE' CYLINDERS T0 CRANK CASES.

APPLICATION FILED MAY25.1921- I Patented Oct. 17,1922.

Patented @ct. l7, llQZZF,

NGLAND, ASSIGNOR TO ARMSTRONG SIIDDELEY SPIRITO 'M. VIALE, 01? CO VENTBY, E

MOTORS LIMITED, 0F COVENTRY, WAR'WICK, ENGLAND.

ATTACHMENT OF ENGINE CYLINDERS T0 CRANK CASES,

Application filed May 25, 1921.

To all whom it may concern Be it known that I, Srrnrro the King of Italy,

MARIO VIALE, residing at Warwick, Eng new and useful Attachment of Engine f which the folmeans for atcrankcases, and the attachment cylinders of internal-combusobject to avoid or bolts and stead thereof to screw-thread the cylinder externally, and to provide light and simple crankcase in SllCl') K121111181 for securing it to the that it can be positioned with accuracy angularly about its axis, and also endwise permissible limits without coming loose in use.

thereof within risk of its beor being rotationally displaced According to this invention, the mouth of the cylinder enters a soc ket in the crankcase, and is there locked by a nut adapted to engage its threaded part and to bear also against the inner end of the socket, and this nut at any prearranged fraction of a turn thereof, can be locked to the crankcase,

being gripped against cylinder thereafter the rotation and endwise displacement by the agency preferably of truncated of a contractile split wedge ring,

wedge section,

which is compressed radially between cooperating inclined surfaces the eXternal end formed around of the socket, and a flange or shoulder around the body of the cylinder, thereby effectively preventing the cylinder unscrewing shoulder at the end or moving endwise.

of the threaded part of the cylinder is provided as an abutment for the end of the nut, thereby in conjunction with the-engagement of the nut with the connecting end of the socket to locate the endwise position of the cylinder. If, when the nut is in contact with this shoulder, the angular position of the cylinder whole cylinder,

is incorrect, the

carrying with it the nut,

can be rotated in the direction tending to screw it into the nut, (after the wedge ring has been slacked off), to the smallest angular position beyond the desired one at w the nut can be locked to the cylinder is then unscrewe hich crankcase. The d relatively to Serial No. 472,464.

thenut and brought to its desired. angular position, when the wedge ring is gain clamped, and thereby the cylinder is securely locked in position.

The manner of carrying out the invention. is illustrated in the accompanying drawings in which- Figure 1 shows in section part of a crankcase and cylinder of an internal combustion engine to which the invention has been applied.

Figure ring.

Like letters indicate like parts throughout the drawings. 7

The cylinder barrel A (indicated in the drawing as vertically arranged) has at an appropriate distance from the bottom end, a circumferential flange A with a bevelled shoulder or face A, and thread is formed at A on the outer surface of the barrel between this flange and the cylinder mouth A.

A co-operating bevelled face B is formed on the adjacent or top end of the crankcase socket B around the aperture B therein which receives and supports the end of the cylinder barrel A. This socket is fitted with a loose sleeve C preferably of steel, which constitutes the nut above mentioned, and is internally threaded to screw upon the threaded part A of the cylinder, and car-v ries at its lower end a flange C Around this flange are spaced holes C which are threaded for engagement by a fastening device in the form of a screw C extending from the outer end of the socket B, thereby to lock the sleeve to the socket B at any desired fraction of a turn as the number of holes C employed. This sleeve C during assembly, is screwed on to the cylinderfrom within the crankcase and preferably is held in position by the screw C, and the cylinder is screwed into it until its inner end abuts a stop in the form of a shoulder A at the end of the threaded part A of the cylinder, the axial load being designed to be taken by the flange C which bears against the inner end of the socket B inside of the crankcase. Alternatively the sleevecan first be located in position in the socket and be there held by the screw C while the cylinder A is screwe into it. a

To provide an abutment junction with the flange C which in conof the sleeve C determined by will grip the cylinder to the crankcase so that it can neither turn angularly nor move endwise in the socket, there is employed a contractile wedge ring in the form of a double conical split ring D (that is, a ring of truncated wedge section) which is tight ened by a tangentially arranged bolt D and is located between the two bevelled faces A and 13 above mentioned. The cylinder can thus be adjusted vertically, that is by reference to the axis of the crankshaft (as a prescribed height within narrow limit-s must be reached in conjunction with a prescribed by rotating the sleeve C angular position) in the crankcase to the requisite extent, and securing it afterwards by the engagement of a locking screw C with one of the series of holes C" formed around the flange C If, however, when the sleeve C is screwed hard against the abutment A and the screw (1*, is engaged with one of the holes C in the sleeve flange C the correct angular position of the cylinder is not obtained, the following procedure is adopted. The split ring D is slacked,.the from the sleeve C, and the cylinder is then rotated (in the direction-which ensures the sleeve being maintained in contact with the abutment A, until it has been turned the least possible amount beyond its desired angular position which Wlll bring a hole C into position for engagement by the screw C The sleeve is then looked in this position by the screw C the cylinder is turned backwards by unscrewing it in the sleeve to the extent necessary to bring it to the correct angular position, when the split ring D is then clamped by its bolt D and the cylinder thereby is firmly secured against angular or endwise movement in the socket of the crankcase. It will be seen that the forego ing arrangement permits of locating the axial position .of the cylinder within the very narrow limits constituted by dividing the pitch of the threads at A by the number of holes C around the sleeve, it being understood that all the cylinders of a given engine have the shoulders A accurately located upon them, and that the sleeves C are alike, as well as the distances of the inner end faces of the socket B from the axis of the crankshaft of the engine. be obvious that by suitably inclining the bevelled. faces A B above mentioned, and

[also the bevelled sides of the ring D which engage them, the later, when firmly clamped by its bolt D is adapted to take up the full. extent of the linear distance which may be occasioned between the shoulder A and the end of the sleeve C in making the angularadjustment of the cylinder just described.

N 0 spanner need be used in the foregoingadju'stments. as before making the'linal adjustments, the sleeve C initially maybe held.

screw C is disengaged against axial andv Furthermore, it will I in position by engagement of the screw C is screwed into it by hand.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1.. In an internal combustion engine, the combination of a cylinder, a supporting memher for said cylinder, a socketin said supporting member through which said cylinder extends, a'sleeve, screw theaded upon said cylinder adapted to engage one end of said socket and to abuta stop upon said cylinder, a shoulder around said cylinder facing the end of said socket remote from the aforesaid screw-threaded sleeve, and a contractile Wedge-ring adapted to fit'between said shoulder and the adjacent end of said socket.

2. In an internal combustion engine, the combination of a cylinder, a supporting memher for said cylinder, a socket in said supporting member through which said cyl'inment selectively by a fastener adapted to secure said sleeve to said cylinder support endwise movement, a shoulder around said cylinder facing the end of said socket remote from that against which said sleeve bears, and a contractile wedge-ring adapted to fit between said shoulder and the adjacent end of said socket. 3. In an internal combustion engine, the combination of a cylinder, a supporting member for said cylinder, a socket lin said supporting'member through which said cylinder extends, a sleeve screw-threaded upon said cylinder to abut a stop thereon and to extend into said socket, a flange formedon said sleeve to abut one end ofsaid socket, holes spaced around said flange for engagement selectively by a fastener adapted to secure said sleeve to said cylinder support against axial and endwise movement, a coned shoulder around said cylinder facing the end of said socket, the'apex of the cone towards the socket, a split contractile wedge ring adapted to fit between said coned shoulder and the adjacent end ofsaid socket, thereby when contracted to'tend to thrust the cylinder out of the socket, and a fastener engaging the split ends of said contractile ring adapted to draw them together.

Intestimony whereof I have signed my name to this specification in the presenceof two subscribing w'litnesses. v

' S. M. VI ALE. Witnesses: A. J. MASTER, ERIC W. War-FORD. 

